Improved driving-gear wheel for carpet-sweepers



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l, PETERS. PHTO-UTHOGRAPHER, WASHINGTON. D. GV

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ALFRED '.I. nnmnngor. BROOKLYN, NEW YORK.

Leners Patent N0.1O5,223, dated July 12,1870.

sists in-'an improved construction thereof; as will be hereinafterdescribed.

Figure 1 is a transverse section of a carpet-sweeperv withdriving-wheels constructed according tomy invention, and

Figure 2 is a section of one of the-wheels. Similar letters ofreferenceindicate corresponding parts. Y

A represents two circular disks of Indial rubber, and BA a metal-toothedwheel, all clamped together by a tubular center, C, passing through theaxis .of the wheel, and. riveted down lat the endson x'vashe'rs D'.

The'toothed wheel B islnot so large as the disks, and

does not touch the door or carpets.

1 propose, also, to'rmake thesecompound wheels by placing the metalparts in molds, and casting the In- My invention 'relates to'carpet-sweepers, and condia -rubber around them, the molds' beingsuitably shaped to prevent the spaces between the teeth from lbeingfilled.

'It is necessary to use India rubber, or other substance which isAnoiseless, on these machines. It is also required to produce sufficienttraction to work the brush, and, in some cases., wheels wholly made ofInf diarubber have been used/but they are found to be' defective inrespect to the wear of the teeth, which soon fail. -v My improved wheelpossesses all' the requisite qualities, namely, durability of the teeth,traction ,of the working faces on the floor,and freedom -from noise.

Having thus described my invention, A

I claim as new and desire to secure by Letters Batent;

The rubber disks A A, spur-wheel B, and tube C, flanged at each end,combined with a carpet-sweeper, having its parts constructed andarranged vas show n and described.

The above specification of my invention signed by me this 7 th day ofApril7 1870. i

ALFRED J; KNIGHT.

Vtnesses:

Guo-W. MAB'EE, L. S. MABEE.'

